Grouped table

Group by publisher Group by genre
How this page is built the gem renders it — this is all you write

Grouping is a render-time arrangement, like the layout. Add group_by: :publisher — the gem orders by the group key, splits the rows into collapsible groups (chevron in the header) and shows a per-group count. With 120 books, groups start collapsed beyond config.group_collapse_threshold (default 50), opening only the first; the open ones live in ?open=, so a half-expanded view is copy-pasteable.

app/views/groups/index.html.erb 
<%= crud_collection @books, group_by: :publisher %>   <%# belongs_to, enum or a column %>

Read more: Grouping

Cover Title Author names Genre Price Publisher Active
— 10
The Burning Machine 7 Octavia Butler Scifi 10.40 € — ✓
The Endless Dune 26 Ursula Le Guin and Joe Abercrombie Fiction 26.43 € — ✓
The Endless Empire 41 Kim Robinson and Ted Chiang Scifi 30.81 € — ✓
The Broken Empire 69 Ted Chiang Nonfiction 29.21 € — ✓
The Endless Ocean 79 Liu Cixin Fiction 24.96 € — ✓
The Distant Dune 86 Adrian Tchaikovsky and Stanisław Lem Scifi 41.33 € — ✓
The Endless Garden 99 Martha Wells and Kim Robinson Nonfiction 17.29 € — ✓
The Dispossessed Dune 102 Frank Herbert, Joe Abercrombie, and Mary Shelley Fiction 37.91 € — ✓
The Luminous Empire 113 Ted Chiang, Mary Shelley, and Kim Robinson Scifi 31.61 € — ✓
The Quiet Dune 115 Ursula Le Guin Fiction 42.25 € — ✓
Tor Books 13
The Hidden Garden 16 Joe Abercrombie, Ted Chiang, and Becky Chambers Fiction 30.44 € Tor Books ✓
The Quiet Machine 31 Margaret Atwood Fiction 21.83 € Tor Books ✓
The Ancient Engine 32 Octavia Butler Fiction 33.11 € Tor Books ✓
The Endless Door 39 Joe Abercrombie Scifi 18.58 € Tor Books ✓
The Endless Station 47 Joe Abercrombie and Kim Robinson Fiction 26.37 € Tor Books ✓
The Hidden Mirror 48 Adrian Tchaikovsky Scifi 21.19 € Tor Books ✓
The Endless Signal 50 Mary Shelley, Ursula Le Guin, and Ted Chiang Nonfiction 26.36 € Tor Books ✓
The Dispossessed Door 51 Stanisław Lem and Becky Chambers Nonfiction 36.10 € Tor Books ✓
The Dispossessed Ocean 67 Martha Wells Fiction 40.62 € Tor Books ✗
The Broken Ocean 68 Kim Robinson and Stanisław Lem Nonfiction 6.07 € Tor Books ✗
The Burning Garden 103 Stanisław Lem and Iain Banks Nonfiction 38.50 € Tor Books ✓
The Hidden Station 109 Becky Chambers, Joe Abercrombie, and Ursula Le Guin Scifi 37.73 € Tor Books ✓
The Endless Station 116 Octavia Butler and Joe Abercrombie Scifi 7.61 € Tor Books ✓
Ace 15
The Ancient Door 34 Margaret Atwood and Mary Shelley Fiction 32.79 € Ace ✓
The Hidden Mirror 35 Ann Leckie Fiction 27.24 € Ace ✓
The Endless Winter 37 Octavia Butler Scifi 39.19 € Ace ✓
The Hidden Machine 38 Joe Abercrombie and Ann Leckie Scifi 38.74 € Ace ✓
The Broken Machine 42 Ted Chiang Nonfiction 25.55 € Ace ✓
The Silent Forest 59 Stanisław Lem Scifi 14.46 € Ace ✓
The Luminous Garden 65 Liu Cixin and Ursula Le Guin Scifi 6.67 € Ace ✓
The Luminous Mirror 70 Adrian Tchaikovsky, Frank Herbert, and Margaret Atwood Scifi 8.90 € Ace ✓
The Dispossessed Winter 73 Adrian Tchaikovsky and Iain Banks Scifi 29.24 € Ace ✗
The Burning Signal 83 Frank Herbert Scifi 42.17 € Ace ✓
The Hidden Signal 85 Becky Chambers, Liu Cixin, and Margaret Atwood Fiction 20.30 € Ace ✗
The Luminous Tower 89 Joe Abercrombie, Liu Cixin, and Margaret Atwood Nonfiction 22.68 € Ace ✗
The Luminous Empire 93 Ann Leckie Scifi 14.02 € Ace ✓
The Distant Dune 104 Becky Chambers and Iain Banks Fiction 25.09 € Ace ✓
The Distant Winter 118 Joe Abercrombie Fiction 16.33 € Ace ✓
Orbit 14
The Hidden Forest 1 Frank Herbert, Ted Chiang, and Ann Leckie Nonfiction 28.24 € Orbit ✗
The Broken Garden 6 Stanisław Lem, Ursula Le Guin, and Iain Banks Nonfiction 19.85 € Orbit ✓
The Hidden Dune 9 Iain Banks Scifi 42.43 € Orbit ✓
The Endless Garden 15 Ursula Le Guin, Joe Abercrombie, and Adrian Tchaikovsky Nonfiction 29.85 € Orbit ✓
The Hidden Dune 21 Octavia Butler Nonfiction 16.41 € Orbit ✓
The Hidden Forest 40 Martha Wells, Joe Abercrombie, and Mary Shelley Fiction 37.54 € Orbit ✓
The Silent Machine 49 Iain Banks Nonfiction 20.70 € Orbit ✓
The Broken Machine 61 Ann Leckie Fiction 30.16 € Orbit ✓
The Ancient City 72 Stanisław Lem, Mary Shelley, and Frank Herbert Fiction 34.41 € Orbit ✓
The Silent City 75 Iain Banks and Octavia Butler Fiction 44.32 € Orbit ✓
The Distant Station 94 Joe Abercrombie Scifi 19.41 € Orbit ✓
The Distant Station 106 Frank Herbert and Mary Shelley Fiction 12.86 € Orbit ✓
The Hidden Dune 110 Iain Banks, Joe Abercrombie, and Frank Herbert Fiction 40.26 € Orbit ✓
The Distant Door 119 Ted Chiang and Kim Robinson Nonfiction 29.94 € Orbit ✓
Gollancz 11
DAW 15
The Endless Mirror 20 Stanisław Lem and Ted Chiang Scifi 21.82 € DAW ✓
The Luminous Ocean 25 Margaret Atwood Fiction 37.67 € DAW ✓
The Burning City 27 Ann Leckie Nonfiction 29.92 € DAW ✓
The Silent Door 29 Iain Banks Nonfiction 38.24 € DAW ✓
The Endless Mirror 33 Frank Herbert Scifi 39.79 € DAW ✓
The Dispossessed Engine 36 Kim Robinson and Mary Shelley Scifi 23.93 € DAW ✓
The Broken Engine 46 Ted Chiang and Octavia Butler Scifi 5.74 € DAW ✓
The Broken Door 53 Adrian Tchaikovsky, Ted Chiang, and Margaret Atwood Scifi 33.91 € DAW ✓
The Silent Forest 62 Frank Herbert, Liu Cixin, and Stanisław Lem Scifi 35.70 € DAW ✓
The Burning Station 87 Adrian Tchaikovsky and Joe Abercrombie Fiction 15.13 € DAW ✓
The Endless Ocean 92 Liu Cixin Scifi 42.02 € DAW ✓
The Hidden Archive 98 Martha Wells and Ursula Le Guin Scifi 27.03 € DAW ✗
The Broken Door 100 Stanisław Lem Nonfiction 26.98 € DAW ✓
The Luminous City 105 Liu Cixin, Stanisław Lem, and Iain Banks Nonfiction 22.63 € DAW ✓
The Dispossessed Archive 114 Octavia Butler and Joe Abercrombie Fiction 8.47 € DAW ✓
Baen 10
Del Rey 13
Vintage 19